“A Summary of the WWDC25 Group Lab”

Hey everyone I just ran into an issue where I couldn't sync the model below fully by using CloudKit, enum LinkMapV3_1: VersionedSchema { static let versionIdentifier: Schema.Version = .init(3, 1, 0) static var models: [any PersistentModel.Type] { [AnnotationData.self, GroupData.self, Item.self, Deployment.self, History.self] } // MARK: - Data @Model class AnnotationData { var name: String = var longitude: Double = 0.0 var latitude: Double = 0.0 var order: Int = -1 var level: Int = 1 var detail: String = @Relationship(deleteRule: .nullify, inverse: GroupData.annotation) var groups: [GroupData]? @Relationship(deleteRule: .nullify, inverse: AnnotationData.to) var from: AnnotationData? var to: AnnotationData? var history: History? } // MARK: - History @Model class History { var id: UUID = UUID() var timestamp: Date = Date() @Relationship(deleteRule: .nullify, inverse: AnnotationData.history) var annotations: [AnnotationData]? @Relationship(deleteRule: .nullify, inverse: GroupData.history) var groups

Hi, I am implementing a sidebar navigation using UITabBarController with the new UITabGroup API on and above iPadOS 18. I’ve encountered an issue where selecting a child UITab within a group does not seem to trigger the child's own viewControllerProvider. Instead, the UITabBarController displays the ViewController associated with the parent UITabGroup. The Issue: In the snippet below, when I tap Item 2A or Item 2B in the iPad sidebar, the app displays the emptyVC (clear background) defined in the section2Group provider, rather than the teal or cyan ViewControllers defined in the individual child tabs. let item2A = UITab( title: Item 2A, image: UIImage(systemName: a.circle), identifier: tab.section2.item2a ) { _ in self.createViewController( title: Section 2 - Item 2A, color: .systemTeal, description: Part of Section 2A group ) } let item2B = UITab( title: Item 2B, image: UIImage(systemName: b.circle), identifier: tab.section2.item2b ) { _ in self.createViewController( title: Section 2 - Item

I encountered a bug with drag-and-drop sorting in ios 26. I created a UITableView for dragging and dropping to adjust the order of the list. However, when I set the height of the cells to a custom height, some cells were not displayed during the dragging process. The tools I use are the official version of Xcode16.1 and the ios 26 emulator And I can also reproduce the same problem on the real device. class ViewController: UIViewController { private let tableView: UITableView = { let tableView = UITableView.init(frame: .zero, style: .grouped) tableView.backgroundColor = .clear tableView.estimatedSectionHeaderHeight = 50 tableView.isEditing = true tableView.showsVerticalScrollIndicator = false tableView.allowsSelectionDuringEditing = true return tableView }() var content: [Int] = [] override func viewDidLoad() { super.viewDidLoad() tableView.register(FTWatchGroupPageCell.self, forCellReuseIdentifier: FTWatchGroupPageCell) tableView.delegate = self tableView.dataSource = self view.addSubview(tableView)

Hi I'm developing an app that autofills Passkeys. The app allows the user to authenticate to their IdP to obtain an access token. Using the token the app fetches from /attestation/options. The app will generate a Passkey credential using a home-grown module - the extension has no involvement, neither does ASAuthorizationSecurityKeyPublicKeyCredentialProvider. I can confirm the passkey does get created. Next the credential is posted to /attestation/results with the response JSON being parsed and used to create a ASPasskeyCredentialIdentity - a sample of the response JSON is attached. Here is my save function: static func save(authenticator: AuthenticatorInfo) async throws { guard let credentialID = Data(base64URLEncoded: authenticator.attributes.credentialId) else { throw AuthenticatorError.invalidEncoding(Credential ID is not a valid Base64URL string.) } guard let userHandle = authenticator.userId.data(using: .utf8) else { throw AuthenticatorError.invalidEncoding(User handle is not a valid UTF-8 string.) } le

Question: How to prevent Flutter app crash on iOS 18 during cold start when iOS traverses view hierarchy before Flutter engine is fully initialized? Help needed: Looking for a way to either delay iOS view hierarchy traversal or ensure Flutter is fully initialized before iOS lifecycle callbacks fire. Problem Summary Our Flutter app crashes on cold start for approximately 1-2% of iOS users. The crash occurs specifically on iOS and only under these exact conditions: When crash happens: User opens app and uses it normally ✅ User minimizes app (goes to background) ✅ User returns to app from background ✅ (works fine) User kills app from app switcher (swipe up to close) User taps app icon to launch again → CRASH ❌ Key observations: Crash is intermittent - app may open on 2nd, 3rd, or 5th attempt 100% reproducible on affected devices by repeating kill→launch cycle ~98% of users have no issues Environment Flutter: 3.38.3 Crash Logs (from Sentry) Crash Type 1: Stack Overflow (most common) OS Version: iOS 18.7.

I am attempting to read and write data to an Office Group Container, and I am consistently prompted with the App would like to access data from other apps alert. How can I configure the application or environment to suppress this repeated permission prompt?

Hi everyone, I'm working on an app that stores multiple secrets in the Keychain, each protected with .userPresence. My goal is to authenticate the user once via FaceID/TouchID and then read multiple Keychain items without triggering subsequent prompts. I am reusing the same LAContext instance for these operations, and I have set: context.touchIDAuthenticationAllowableReuseDuration = LATouchIDAuthenticationMaximumAllowableReuseDuration However, I'm observing that every single SecItemCopyMatching call triggers a new FaceID/TouchID prompt, even if they happen within seconds of each other using the exact same context. Here is a simplified flow of what I'm doing: Create a LAContext. Set touchIDAuthenticationAllowableReuseDuration to max. Perform a query (SecItemCopyMatching) for Item A, passing [kSecUseAuthenticationContext: context]. Result: System prompts for FaceID. Success. Immediately perform a query (SecItemCopyMatching) for Item B, passing the same [kSecUseAuthenticationContext: context]. Result: System pro

I can't upload my macOS app to app store connect. Each time i try to upload, i see this message: Provisioning profile failed qualification Profile doesn't support App Groups. An empty app without an app group uploads fine, but if i add an app group to it, it does not upload.